US3370949A - Process of preparing transparentized double face photoprinting material for the so-called dry process - Google Patents

Process of preparing transparentized double face photoprinting material for the so-called dry process Download PDF

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Publication number
US3370949A
US3370949A US323477A US32347763A US3370949A US 3370949 A US3370949 A US 3370949A US 323477 A US323477 A US 323477A US 32347763 A US32347763 A US 32347763A US 3370949 A US3370949 A US 3370949A
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United States
Prior art keywords
paper
transparentized
preparing
seconds
photoprinting
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Expired - Lifetime
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US323477A
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English (en)
Inventor
Adrianus Johannes Pe Groenland
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LICHTDRUKPAPIERFABRIEK DE ATLA
Nv Lichtdrukpapierfabriek "de Atlas"
R Q O HOLDING CO Inc
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LICHTDRUKPAPIERFABRIEK DE ATLA
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Assigned to R Q O HOLDING COMPANY INC reassignment R Q O HOLDING COMPANY INC ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GAF CORPORATION
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/785—Photosensitive materials characterised by the base or auxiliary layers the base being of paper translucent
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances

Definitions

  • the process for preparing such photoprint paper involving the improvement according to which the material is incompletely transparentized by means of a transparentizing agent which keeps the gas permeability of the resultant transparentized product, measured with the Bekk apparatus, at below 50 seconds.
  • the invention also provides a papertransparentizing composition for use in the preparation of such photoprint paper.
  • the carrier material of the intermediate tracing it is desirable for the carrier material of the intermediate tracing to have a perviousness to light (transparency) as great as possible.
  • the colour of the lines and the text carried by the intermediate tracing prefferably has the highest possible absorption value in respect of the light which is active in the photoprinting process, namely, ultraviolet and violet light.
  • the colour of the lines and the text carried by the intermediate tracing prefferably has the highest possible absorption value in respect of the light which is active in the photoprinting process, namely, ultraviolet and violet light.
  • a yellow or yellow-containing colour is applied for a good U.V. density.
  • the readability through the carrier material is not a problem in the case of transparent films (for example, cellulose acetate), or in the case of very transparent paper (transparent drawing paper).
  • transparent films for example, cellulose acetate
  • transparent drawing paper transparent drawing paper
  • these materials are not only expensive, but their mechanical characteristics are often unfavourable (they are easi y torn, cannot be folded, tend to curl); a further problem is that for some purposes the material must be suitable to write on.
  • a practical requirement in this connection is that it must also be possible for the paper thus exposed to be developed at one time in a developing machine, which is often coupled to the exposure apparatus. This involves that the developing medium should either be admitted to both sides of the material, or must be capable of reaching the back through the material from the front.
  • Developing machines operating according to the wet or semi-wet process generally moisten (i.e. develop) the material on both sides. Dry process developing machines, however, predominantly admit the developing medium (gaseous ammonia) to one side only.
  • the material which is sensitive on both sides must allow the gas (ammonia) to pass through it to a sufficient extent, in other words, the carrier must be, and, remain, sutficiently porous for the development to be effected at one time.
  • transparentized paper is designated a normal type of paper, suitable for making an intermediate tracing, which has been impregnated with a suitable transparentizing agent, a resin or oil, which has filled the pores of the paper. Normally, these pores contain air; the refraction and reflection of light which is effected on the boundary faces paper-fibre-air are one cause of the non-transparency of normal paper. If the pores are filled with a transparentizing agent, the transparency of the paper is considerably increased, and hence the time required to expose a certain photoprinting material through such paper to a specific degree is decreased correspondingly. This time will hereinafter be referred to as the transexposure time.
  • the invention accordingly relates to a process for preparing transparentized photoprinting material which is on both sides provided with a photosensitive coating containing a photosensitive diazo compound together with a coupling component, and which process is characterized by the feature that the material is incompletely transparentized either before or after it has been rendered photosensitive, and this is such a manner that the gas permability of the resultant transparentized product, measured with the Bekk apparatus, remains below 50 seconds.
  • the transexposure time has already decreased from 49 to 33 seconds, while at best a value of 29 seconds can be attained, i.e.,
  • the additional step of transparentization will only be applied if a reasonable gain in transexposure time can be obtained by complete transparentization on the one hand, while on the other hand the incomplete transparentization according to the invention should result in at least 50% of the maximum transparency that can be attained.
  • the chemical composition of the transparentizing agent is immaterial. As will appear from the examples, it is always possihle to select a composition which results in a good gas permeability. The transexposure time associated with such gas permeability is substantially constant.
  • the measured results are independent of the photoprinting characteristics of the material as such. Accordingly, corresponding results are found with blank paper and paper rendered photosensitive, irrespective, also, of whether the transparentization is eiiected before or after the sensitization.
  • Example 1 Composition 1 2 3 4 Xylene in which dissolved 50% of polystyrene O 5 Kerosene 100 95 90 85 80 75
  • the gas permeability is measured by means of the Bekk apparatus. Also measured is the time required to expose photoprinting paper to the same degree through the test papers under otherwise equal conditions. The measured values result in the curves illustrated in the drawing.
  • paper treated with the composition 14 parts by Weight of the polystyrene solution and 86 parts by weight of kerosene, is still suitable for the purpose, which, indeed, corresponds with the actual test. For practical purposes, a smaller amount of resin will mostly be sufiicient. Thus, a mixture of 12.5 parts by weight of the polystyrene solution and 87.5 parts by weight of kerosene turns out to be very suitable for large-scale production.
  • Example 2 A base paper as in Example 1, in a quality of 60 g./ 111. is treated in accordance with Example 1. It appears diagrammatically that the compositions: 12.5 parts by weight of the polystyrene solution and 87.5 parts by Weight of kerosene may be expected to produce good results.
  • Example 3 Base paper as in Example 2 is transparentized by means of the commerical C.T.S. transparentizing agent; the agent is made up with carbon tetrachloride to the desired concentration for the purpose.
  • a practicable comprise between the gas permeability and the transparency is attained with parts by weight of C.T.S. agent and parts by weight of carbon tetrachloride.
  • the C.T.S. agent is prepared by C.T.S. Philadelphia in accordance with US. Patent No. 2,616,815.
  • Example 4 The paper obtained in the manner mentioned in Examples 1 and 2 is rendered photosensitive on one side according to Recipe (a) and on the other side according to Recipe (b).
  • transparentizing is effected with, as transparentizing liquid, a mixture of 10.0-14.0 parts by weight of a 50% solution of polystyrene in xylene and 90.0-86.0 parts by weight of kerosene.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
US323477A 1962-11-15 1963-11-13 Process of preparing transparentized double face photoprinting material for the so-called dry process Expired - Lifetime US3370949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL285544 1962-11-15

Publications (1)

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US3370949A true US3370949A (en) 1968-02-27

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US323477A Expired - Lifetime US3370949A (en) 1962-11-15 1963-11-13 Process of preparing transparentized double face photoprinting material for the so-called dry process

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US (1) US3370949A (sv)
DE (1) DE1447757A1 (sv)
FR (1) FR1386311A (sv)
GB (1) GB1072117A (sv)
NL (2) NL120105C (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466172A (en) * 1967-01-13 1969-09-09 Ibm Method of using photographic vesicular and diazo films having diazo antihalation layers
US3484241A (en) * 1967-01-16 1969-12-16 Ibm Diazo type films with extended linear latitude
US3773511A (en) * 1969-10-14 1973-11-20 Microseal Corp Film record card system
US3923518A (en) * 1973-04-10 1975-12-02 Andrews Paper & Chem Co Inc Erasable diazotype material with vinyl chloride and methyl acrylate copolymer interlayer
US3996056A (en) * 1973-04-10 1976-12-07 Andrews Paper & Chemical Co. Diazotype reproduction layer formed from matrix of spheric particle polystyrene pigment and diazotype components
US4058399A (en) * 1973-06-01 1977-11-15 Defiance - Azon Corporation Photosensitive diazotype material and method of making the same
US4080208A (en) * 1975-01-13 1978-03-21 Addressograph Multigraph Corporation Photosensitive diazomicrofilm adapted to be readable but nonreproducible upon processing
US5055354A (en) * 1989-07-27 1991-10-08 Phomat Reprographics, Inc. Transparentized paper and method for its manufacture
CN101639622B (zh) * 2009-04-22 2011-08-17 珠海开元纸业有限公司 薄型感光晒图纸的制造方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2087609A (en) * 1933-02-25 1937-07-20 Brown Co Manufacture of transparent sheet material
US2181160A (en) * 1934-08-11 1939-11-28 Hereules Powder Company Moistureproofed material
US2501874A (en) * 1946-06-12 1950-03-28 Gen Aniline & Film Corp Photographic diazo-sensitized glassine paper
US2616815A (en) * 1950-04-12 1952-11-04 Robert R Parmentier Transparentizing compositions and process
US2908571A (en) * 1956-02-08 1959-10-13 Eastman Kodak Co Reflex copying process
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof
US3069268A (en) * 1958-07-10 1962-12-18 Gen Aniline & Film Corp Method for improving the tonal gradation of diazotype materials using stratified sensitizing components and u. v. filters
US3183093A (en) * 1959-12-09 1965-05-11 Keuffel & Esser Co Light sensitive diazotype material containing dibenzyl alkylamine coupling agents

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2087609A (en) * 1933-02-25 1937-07-20 Brown Co Manufacture of transparent sheet material
US2181160A (en) * 1934-08-11 1939-11-28 Hereules Powder Company Moistureproofed material
US2501874A (en) * 1946-06-12 1950-03-28 Gen Aniline & Film Corp Photographic diazo-sensitized glassine paper
US2616815A (en) * 1950-04-12 1952-11-04 Robert R Parmentier Transparentizing compositions and process
US2908571A (en) * 1956-02-08 1959-10-13 Eastman Kodak Co Reflex copying process
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof
US3069268A (en) * 1958-07-10 1962-12-18 Gen Aniline & Film Corp Method for improving the tonal gradation of diazotype materials using stratified sensitizing components and u. v. filters
US3183093A (en) * 1959-12-09 1965-05-11 Keuffel & Esser Co Light sensitive diazotype material containing dibenzyl alkylamine coupling agents

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466172A (en) * 1967-01-13 1969-09-09 Ibm Method of using photographic vesicular and diazo films having diazo antihalation layers
US3484241A (en) * 1967-01-16 1969-12-16 Ibm Diazo type films with extended linear latitude
US3773511A (en) * 1969-10-14 1973-11-20 Microseal Corp Film record card system
US3923518A (en) * 1973-04-10 1975-12-02 Andrews Paper & Chem Co Inc Erasable diazotype material with vinyl chloride and methyl acrylate copolymer interlayer
US3996056A (en) * 1973-04-10 1976-12-07 Andrews Paper & Chemical Co. Diazotype reproduction layer formed from matrix of spheric particle polystyrene pigment and diazotype components
US4058399A (en) * 1973-06-01 1977-11-15 Defiance - Azon Corporation Photosensitive diazotype material and method of making the same
US4080208A (en) * 1975-01-13 1978-03-21 Addressograph Multigraph Corporation Photosensitive diazomicrofilm adapted to be readable but nonreproducible upon processing
US5055354A (en) * 1989-07-27 1991-10-08 Phomat Reprographics, Inc. Transparentized paper and method for its manufacture
CN101639622B (zh) * 2009-04-22 2011-08-17 珠海开元纸业有限公司 薄型感光晒图纸的制造方法

Also Published As

Publication number Publication date
NL285544A (sv)
FR1386311A (fr) 1965-01-22
GB1072117A (en) 1967-06-14
DE1447757A1 (de) 1969-05-08
NL120105C (sv)

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Owner name: R Q O HOLDING COMPANY INC 111 WEST 2ND ST JAMESTOW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526

Owner name: R Q O HOLDING COMPANY INC, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GAF CORPORATION;REEL/FRAME:004006/0585

Effective date: 19820526